WATERLOO, Iowa - As parents and kids go through their treats on Wednesday night, some might also find the pictures of two familiar faces.

It's been three and a half months since two Black Hawk County cousins disappeared. Authorities believe they were kidnapped and have since been begging the public for any information they may have.

11-year-old Lyric Cook and 9-year-old Elizabeth Collins were last seen riding their bikes in Evansdale on July 13th. Since then, thousands of people have posted their pictures online, on billboards, and in windows.

On Wednesday, the Collins family tried a new approach by sticking their pictures on Halloween candy. The family set up shop at Geno's Pizza in Crossroads Mall in Waterloo.

With every reach in the bucket, the family knew they were helping spread the word. "This will be just one more thing to remind them," said Heather Collins, the mother of Elizabeth Collins.

Thousands of pieces and not one went without the pictures of Lyric and Elizabeth and the tipline number. "I think it's the best thing they could do. There is really nothing else to do right now, it's just get the message out there as much as you can," said Kirsten Bailey, of Waterloo.

The idea came from a guy out of state who created a Facebook page urging people all over the country to print fliers of the girls and pass them out with candy on Halloween. The Collins made them into stickers. Some people in North Carolina even attached them to water bottles. "It's just amazing. They've become everybody's girls, not just Iowa's girls, but everyone's girls and everyone wants them back," said Heather Collins.

The Collins family hopes that every tipline number tossed into bags on Wednesday will help do just that.

While Iowans are likely well aware the two girls went missing, Heather said they just want to keep reminding people they still haven't been found. "Just keeping the word out and keeping their faces out there. As they are going through their candy they may say oh, they are still missing, or maybe they will go, oh wait I did see something weird that day. So we're just keeping the awareness out there," said Heather Collins.

Heather Collins said the family has just been focusing their efforts on faith and spreading the word. They are still very hopeful the girls will come home.

Anyone with information about the girls' disappearance should call the tipline at 319-232-6682.